Re: [Xen-devel] [PATCH 5/5] VT-d: adjust IOMMU interrupt affinities when all CPUs are online

[Keir Fraser <keir.xen@xxxxxxxxx>]

On 21/11/2012 10:19, "Jan Beulich" <JBeulich@xxxxxxxx> wrote:

> Since these interrupts get setup before APs get brought online, their
> affinities naturally could only ever point to CPU 0 alone so far.
> Adjust this to include potentially multiple CPUs in the target mask
> (when running in one of the cluster modes), and take into account NUMA
> information (to handle the interrupts on a CPU on the node where the
> respective IOMMU is).
> 
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
> 
> --- a/xen/drivers/passthrough/vtd/dmar.c
> +++ b/xen/drivers/passthrough/vtd/dmar.c
> @@ -839,6 +839,7 @@ void acpi_dmar_reinstate(void)
>  
>  void acpi_dmar_zap(void)
>  {
> +    adjust_vtd_irq_affinities();

Is this just a handy place to hook? Does it logically make sense?

 -- Keir



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